• ConcurrentHashMap is a highly concurrent, high-performance implementation backed up by a hash table.
  • This implementation never blocks when performing retrievals and allows the client to select the concurrency level for updates.
  • It is intended as a drop-in replacement for Hashtable: in addition to implementing ConcurrentMap, it supports all the legacy methods peculiar to Hashtable.

Related concepts


ConcurrentHashMap — Structure map

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